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clean up all of eight BaseMemoryLib instances in MdePkg with the following updates:

Browse Source 
1.	Remove .intel_syntax directives in GCC assembly files. All these assembly files have been updated to use the preferred syntax for GAS
2.	Correct the incorrect comments for internal worker functions for SetMemXX() and ScanMemXX(). The Length parameter is actually the counter of 16-bit, 32-bit or 64-bit value. 
3.	Simplify the logic in ZeroMemoryWrapper.c for BaseMemoryLibOptPei instance to remove the conditional statement for zero length. This logic is already covered by worker function InternalMemZeroMem(). 
4.	Cleanup all the Wrapper C files in BaseMemoryLib instances. They are supposed to be shared by all these 8 BaseMemoryLib instances, but are out-of-sync after some maintenance. This patch re-syncs them and makes them exactly the same.
5.	Cleanup MemLibInternal.h so that it is shared by 6 BaseMemoryLib instance except for PeiMemoryLib and UefiMemoryLib.


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9041 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
2009-08-11 15:32:16 +00:00
parent ba19956ac3
commit 1fef058f4b
162 changed files with 1087 additions and 1252 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
MdePkg/Library/BaseMemoryLibOptDxe/CompareMemWrapper.c
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@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibOptDxe/CopyMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibOptDxe/MemLibGuid.c
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@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

25
MdePkg/Library/BaseMemoryLibOptDxe/MemLibInternals.h
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@@ -8,10 +8,8 @@
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -30,7 +28,6 @@
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
/**
Copy Length bytes from Source to Destination.
@@ -52,9 +49,9 @@ InternalMemCopyMem (
/**
Set Buffer to Value for Size bytes.
@param Buffer Memory to set.
@param Length Number of bytes to set
@param Value Value of the set operation.
@param Buffer Memory to set.
@param Length Number of bytes to set
@param Value Value of the set operation.
@return Buffer
@@ -71,7 +68,7 @@ InternalMemSetMem (
Fills a target buffer with a 16-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 16-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -89,7 +86,7 @@ InternalMemSetMem16 (
Fills a target buffer with a 32-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 32-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -107,7 +104,7 @@ InternalMemSetMem32 (
Fills a target buffer with a 64-bit value, and returns the target buffer.
@param Buffer Pointer to the target buffer to fill.
@param Length Number of bytes in Buffer to fill.
@param Length Count of 64-bit value to fill.
@param Value Value with which to fill Length bytes of Buffer.
@return Buffer
@@ -163,7 +160,7 @@ InternalMemCompareMem (
matching 8-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 8-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -182,7 +179,7 @@ InternalMemScanMem8 (
matching 16-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 16-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -201,7 +198,7 @@ InternalMemScanMem16 (
matching 32-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 32-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.
@@ -220,7 +217,7 @@ InternalMemScanMem32 (
matching 64-bit value in the target buffer.
@param Buffer Pointer to the target buffer to scan.
@param Length Number of bytes in Buffer to scan. Must be non-zero.
@param Length Count of 64-bit value to scan. Must be non-zero.
@param Value Value to search for in the target buffer.
@return Pointer to the first occurrence or NULL if not found.

4
MdePkg/Library/BaseMemoryLibOptDxe/ScanMem16Wrapper.c
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@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibOptDxe/ScanMem32Wrapper.c
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@@ -9,9 +9,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibOptDxe/ScanMem64Wrapper.c
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@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

4
MdePkg/Library/BaseMemoryLibOptDxe/ScanMem8Wrapper.c
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@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

26
MdePkg/Library/BaseMemoryLibOptDxe/SetMem16Wrapper.c
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@@ -1,7 +1,17 @@
/** @file
SetMem16() implementation.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -10,22 +20,8 @@
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
The following BaseMemoryLib instances contains the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
**/
#include "MemLibInternals.h"
/**

26
MdePkg/Library/BaseMemoryLibOptDxe/SetMem32Wrapper.c
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@@ -1,7 +1,17 @@
/** @file
SetMem32() implementation.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -10,22 +20,8 @@
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
**/
#include "MemLibInternals.h"
/**

26
MdePkg/Library/BaseMemoryLibOptDxe/SetMem64Wrapper.c
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@@ -1,7 +1,17 @@
/** @file
SetMem64() implementation.
Copyright (c) 2006 - 2008, Intel Corporation<BR>
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -10,22 +20,8 @@
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
**/
#include "MemLibInternals.h"
/**

4
MdePkg/Library/BaseMemoryLibOptDxe/SetMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008, Intel Corporation<BR>
Copyright (c) 2006 - 2009, Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at

25
MdePkg/Library/BaseMemoryLibOptDxe/X64/CompareMem.S
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@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -41,20 +41,19 @@
# IN CONST VOID *SourceBuffer,
# IN UINTN Length
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(InternalMemCompareMem)
ASM_PFX(InternalMemCompareMem):
push rsi
push rdi
mov rsi, rcx
mov rdi, rdx
mov rcx, r8
pushq %rsi
pushq %rdi
movq %rcx, %rsi
movq %rdx, %rdi
movq %r8, %rcx
repe cmpsb
movzx rax, byte ptr [rsi - 1]
movzx rdx, byte ptr [rdi - 1]
sub rax, rdx
pop rdi
pop rsi
movzbq -1(%rsi) , %rax
movzbq -1(%rdi) , %rdx
sub %dl, %al
popq %rdi
popq %rsi
ret

61
MdePkg/Library/BaseMemoryLibOptDxe/X64/CopyMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -33,51 +33,50 @@
# IN UINTN Count
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemCopyMem)
ASM_PFX(InternalMemCopyMem):
push rsi
push rdi
mov rsi, rdx # rsi <- Source
mov rdi, rcx # rdi <- Destination
lea r9, [rsi + r8 - 1] # r9 <- Last byte of Source
cmp rsi, rdi
mov rax, rdi # rax <- Destination as return value
pushq %rsi
pushq %rdi
movq %rdx, %rsi # rsi <- Source
movq %rcx, %rdi # rdi <- Destination
leaq -1(%rsi,%r8,), %r9 # r9 <- Last byte of Source
cmpq %rdi, %rsi
movq %rdi, %rax # rax <- Destination as return value
jae L0 # Copy forward if Source > Destination
cmp r9, rdi # Overlapped?
jae L_CopyBackward # Copy backward if overlapped
cmpq %rdi, %r9 # Overlapped?
jae L_CopyBackward # Copy backward if overlapped
L0:
xor rcx, rcx
sub rcx, rdi # rcx <- -rdi
and rcx, 15 # rcx + rsi should be 16 bytes aligned
xorq %rcx, %rcx
subq %rdi, %rcx # rcx <- -rdi
andq $15, %rcx # rcx + rsi should be 16 bytes aligned
jz L1 # skip if rcx == 0
cmp rcx, r8
cmova rcx, r8
sub r8, rcx
cmpq %r8, %rcx
cmova %r8, %rcx
subq %rcx, %r8
rep movsb
L1:
mov rcx, r8
and r8, 15
shr rcx, 4 # rcx <- # of DQwords to copy
movq %r8, %rcx
andq $15, %r8
shrq $4, %rcx # rcx <- # of DQwords to copy
jz L_CopyBytes
movdqa [rsp + 0x18], xmm0 # save xmm0 on stack
movdqu %xmm0, 0x18(%rsp) # save xmm0 on stack
L2:
movdqu xmm0, [rsi] # rsi may not be 16-byte aligned
movntdq [rdi], xmm0 # rdi should be 16-byte aligned
add rsi, 16
add rdi, 16
movdqu (%rsi), %xmm0 # rsi may not be 16-byte aligned
movntdq %xmm0, (%rdi) # rdi should be 16-byte aligned
addq $16, %rsi
addq $16, %rdi
loop L2
mfence
movdqa xmm0, [rsp + 0x18] # restore xmm0
movdqa 0x18(%rsp), %xmm0 # restore xmm0
jmp L_CopyBytes # copy remaining bytes
L_CopyBackward:
mov rsi, r9 # rsi <- Last byte of Source
lea rdi, [rdi + r8 - 1] # rdi <- Last byte of Destination
movq %r9, %rsi # rsi <- Last byte of Source
leaq -1(%rdi, %r8,), %rdi # rdi <- Last byte of Destination
std
L_CopyBytes:
mov rcx, r8
movq %r8, %rcx
rep movsb
cld
pop rdi
pop rsi
popq %rdi
popq %rsi
ret

19
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem16.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -37,21 +37,20 @@
# CONST VOID *
# EFIAPI
# InternalMemScanMem16 (
# IN CONST VOID *Buffer,
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT16 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem16)
ASM_PFX(InternalMemScanMem16):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasw
lea rax, [rdi - 2]
cmovnz rax, rcx
pop rdi
leaq -2(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem32.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -42,16 +42,15 @@
# IN UINT32 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem32)
ASM_PFX(InternalMemScanMem32):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
repne scasd
lea rax, [rdi - 4]
cmovnz rax, rcx
pop rdi
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasl
leaq -4(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

19
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem64.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -37,20 +37,19 @@
# CONST VOID *
# EFIAPI
# InternalMemScanMem64 (
# IN CONST VOID *Buffer,
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT64 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem64)
ASM_PFX(InternalMemScanMem64):
push rdi
mov rdi, rcx
mov rax, r8
mov rcx, rdx
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
movq %rdx, %rcx
repne scasq
lea rax, [rdi - 8]
cmovnz rax, rcx
pop rdi
leaq -8(%rdi), %rax
cmovnz %rcx, %rax
popq %rdi
ret

23
MdePkg/Library/BaseMemoryLibOptDxe/X64/ScanMem8.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -37,21 +37,20 @@
# CONST VOID *
# EFIAPI
# InternalMemScanMem8 (
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT8 Value
# IN CONST VOID *Buffer,
# IN UINTN Length,
# IN UINT8 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemScanMem8)
ASM_PFX(InternalMemScanMem8):
push rdi
mov rdi, rcx
mov rcx, rdx
mov rax, r8
pushq %rdi
movq %rcx, %rdi
movq %rdx, %rcx
movq %r8, %rax
repne scasb
lea rax, [rdi - 1]
cmovnz rax, rcx # set rax to 0 if not found
pop rdi
leaq -1(%rdi), %rax
cmovnz %rcx, %rax # set rax to 0 if not found
popq %rdi
ret

43
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem.S
View File

@@ -1,6 +1,6 @@
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -29,30 +29,29 @@
# IN UINT8 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem)
ASM_PFX(InternalMemSetMem):
push rdi
push rbx
push rcx # push Buffer
mov rax, r8 # rax = Value
and rax, 0xff # rax = lower 8 bits of r8, upper 56 bits are 0
mov ah, al # ah = al
mov bx, ax # bx = ax
shl rax, 0x10 # rax = ax << 16
mov ax, bx # ax = bx
mov rbx, rax # ebx = eax
shl rax, 0x20 # rax = rax << 32
or rax, rbx # eax = ebx
mov rdi, rcx # rdi = Buffer
mov rcx, rdx # rcx = Count
shr rcx, 3 # rcx = rcx / 8
pushq %rdi
pushq %rbx
pushq %rcx # push Buffer
movq %r8, %rax # rax = Value
andq $0xff, %rax # rax = lower 8 bits of r8, upper 56 bits are 0
movb %al, %ah # ah = al
movw %ax, %bx # bx = ax
shlq $0x10, %rax # rax = ax << 16
movw %bx, %ax # ax = bx
movq %rax, %rbx # ebx = eax
shlq $0x20, %rax # rax = rax << 32
orq %rbx, %rax # eax = ebx
movq %rcx, %rdi # rdi = Buffer
movq %rdx, %rcx # rcx = Count
shrq $3, %rcx # rcx = rcx / 8
cld
rep stosq
mov rcx, rdx # rcx = rdx
and rcx, 7 # rcx = rcx & 7
movq %rdx, %rcx # rcx = rdx
andq $7, %rcx # rcx = rcx & 7
rep stosb
pop rax # rax = Buffer
pop rbx
pop rdi
popq %rax # rax = Buffer
popq %rbx
popq %rdi
ret

15
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem16.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,15 +34,14 @@
# IN UINT16 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
push rdi
mov rdi, rcx
mov rax, r8
xchg rcx, rdx
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
xchg %rdx, %rcx
rep stosw
mov rax, rdx
pop rdi
movq %rdx, %rax
popq %rdi
ret

17
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem32.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -34,15 +34,14 @@
# IN UINT32 Value
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem32)
ASM_PFX(InternalMemSetMem32):
push rdi
mov rdi, rcx
mov rax, r8
xchg rcx, rdx
rep stosd
mov rax, rdx
pop rdi
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
xchgq %rdx, %rcx
rep stosl
movq %rdx, %rax
popq %rdi
ret

15
MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -33,15 +33,14 @@
# IN UINT64 Value
# )
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
ASM_PFX(InternalMemSetMem64):
push rdi
mov rdi, rcx
mov rax, r8
xchg rcx, rdx
pushq %rdi
movq %rcx, %rdi
movq %r8, %rax
xchg %rdx, %rcx
rep stosq
mov rax, rdx
pop rdi
movq %rdx, %rax
popq %rdi
ret

23
MdePkg/Library/BaseMemoryLibOptDxe/X64/ZeroMem.S
View File

@@ -3,7 +3,7 @@
#
#------------------------------------------------------------------------------
#
# Copyright (c) 2006 - 2008, Intel Corporation
# Copyright (c) 2006 - 2009, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -32,21 +32,20 @@
# IN UINTN Count
# );
#------------------------------------------------------------------------------
.intel_syntax noprefix
ASM_GLOBAL ASM_PFX(InternalMemZeroMem)
ASM_PFX(InternalMemZeroMem):
push rdi
push rcx
xor rax, rax
mov rdi, rcx
mov rcx, rdx
shr rcx, 3
and rdx, 7
pushq %rdi
pushq %rcx
xorq %rax, %rax
movq %rcx, %rdi
movq %rdx, %rcx
shrq $3, %rcx
andq $7, %rdx
cld
rep stosq
mov rcx, rdx
movq %rdx, %rcx
rep stosb
pop rax
pop rdi
popq %rax
popq %rdi
ret

7
MdePkg/Library/BaseMemoryLibOptDxe/ZeroMemWrapper.c
View File

@@ -10,9 +10,9 @@
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
DxeMemoryLib
UefiMemoryLib
Copyright (c) 2006 - 2008 , Intel Corporation<BR>
Copyright (c) 2006 - 2009 , Intel Corporation<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -48,8 +48,5 @@ ZeroMem (
{
ASSERT (!(Buffer == NULL && Length > 0));
ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));
if (Length == 0) {
return Buffer;
}
return InternalMemZeroMem (Buffer, Length);
}